While attempting to find a way to stop a curse that's affecting all the books in Ponyville, Princess Twilight Sparkle discovers a lost and forgotten village that just might hold the key ...

Princess Twilight Sparkle is so close to finishing her Autumnal Equine-nox spell, she can feel it. But she needs one more book to pull it off, and it’s extraordinarily rare. As the leaves in Ponyville start to fall, her search for the text takes her to the town of Bales. It’s packed with libraries and bookshops, so the princess is in a reader’s paradise! But how is it that she’s never even heard of Bales? She soon finds that the town was cursed long ago, and now the rest of Equestria is slowly forgetting ... it exists. Even with the help of her best friends, can Princess Twilight Sparkle help this town full of book-lovers get back on the map?